Archive for February, 2012

links to micro hydro generators

Micro hydro is a sustainable energy system that takes us back to the time of the water wheel —

Electric lighting is still the most efficient way to produce light, converting mechanical energy into light is one of the most important developments in human history, lengthening the time people can work , as there is light to work by, and effectively making us more efficient as a species.

Electrical lighting is safer than candles and provides a cleaner and more steady light and doesn’t burn anything, it is also available at the flick of a switch and from a distance, gas lighting and other methods of lighting have many flaws when compared to this .

If used for nothing other then lighting, electrical systems are a very good candidate for hydro power, as it is constant and predictable.

Hydro-power i.e water wheels should be used directly, with gearing, if mechanical energy is needed, (like to run a mill, or lath , or bellows for a forge) as losses in generators are quite large especially in improvised ones, unless power is needed far from water and then you have no choice but to run cables, and use generators. This should be avoided, if possible.

But it is my opinion that using water to power electrical lighting is the best way to do lighting

Water tank attached to my gutters ….

Posted: February 23, 2012 in Survival

image Fills up usually in one rain … 750 litre tank … Enough drinking water for my family for 2 months … Lucky I have a perenial stream 300m down the road for watering plants and emergency drinking water …. If the neighborhood pools dry up

Drying and dehydrating has long been used as a method to preserver food, the lack of water in dehydrated food stops bacteria multiplying.

When compared to other methods of food preservation , drying wins hands down as it allows most foods to be preserved without any additives, this is important as those additives may not be available anymore after a civil collapse.

Food can be dried in Johannesburg, mostly when weather permits , which is usually best in early winter, and even late summer on days that it doesn’t rain.

Dry in the sun on a fly proof rack in a box, under a pane of glass for full effect, or alternatively in the oven on a low heat , about 60 to 80 centigrade.

When in doubt as to if its ready, dry it for longer,,, longer is better than shorter,,,

Most dried stuff will keep for 6 months once dried and stored in a dry place, away from insects, careful not to use wet/damp containers, and discard anything that looks moldy.

Sun-dried tomatoes are a great way to store your tomato crop, make sure they are ripe, but not over ripe before starting .